用java做好的登陸界面，當登陸成功后跳轉到下個頁面的代碼是什么？

用java做好的登陸界面，當登陸成功后跳轉到下個頁面的代碼如下：

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如果登陸驗證是在jsp中，那么跳轉可以寫成

1.response.sendRedirct("跳轉到頁面");

2.jsp:forward page="跳轉頁面"/

3.response.setHeader("Location","");

如果是登陸驗證是在servlet中，那么中轉可以寫成

1.response.sendRedirect("/a.jsp");

2.RequestDispatcher dispatcher = request.getRequestDispatcher("/a.jsp");

dispatcher .forward(request, response);

也可以使用js代碼實現：

script

function validate(){

window.location.href="/index.jsp";

}

/script

java實現簡單登錄界面

自己寫的比較規范的代碼，都有注釋:

import javax.swing.JFrame;//框架

import javax.swing.JPanel;//面板

import javax.swing.JButton;//按鈕

import javax.swing.JLabel;//標簽

import javax.swing.JTextField;//文本框

import java.awt.Font;//字體

import java.awt.Color;//顏色

import javax.swing.JPasswordField;//密碼框

import java.awt.event.ActionListener;//事件監聽

import java.awt.event.ActionEvent;//事件處理

import javax.swing.JOptionPane;//消息窗口

public class UserLogIn extends JFrame{

public JPanel pnluser;

public JLabel lbluserLogIn;

public JLabel lbluserName;

public JLabel lbluserPWD;

public JTextField txtName;

public JPasswordField pwdPwd;

public JButton btnSub;

public JButton btnReset;

public UserLogIn(){

pnluser = new JPanel();

lbluserLogIn = new JLabel();

lbluserName = new JLabel();

lbluserPWD = new JLabel();

txtName = new JTextField();

pwdPwd = new JPasswordField();

btnSub = new JButton();

btnReset = new JButton();

userInit();

}

public void userInit(){

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//設置關閉框架的同時結束程序

this.setSize(300,200);//設置框架大小為長300,寬200

this.setResizable(false);//設置框架不可以改變大小

this.setTitle("用戶登錄");//設置框架標題

this.pnluser.setLayout(null);//設置面板布局管理

this.pnluser.setBackground(Color.cyan);//設置面板背景顏色

this.lbluserLogIn.setText("用戶登錄");//設置標簽標題

this.lbluserLogIn.setFont(new Font("宋體",Font.BOLD | Font.ITALIC,14));//設置標簽字體

this.lbluserLogIn.setForeground(Color.RED);//設置標簽字體顏色

this.lbluserName.setText("用戶名:");

this.lbluserPWD.setText("密 碼:");

this.btnSub.setText("登錄");

this.btnReset.setText("重置");

this.lbluserLogIn.setBounds(120,15,60,20);//設置標簽x坐標120,y坐標15,長60,寬20

this.lbluserName.setBounds(50,55,60,20);

this.lbluserPWD.setBounds(50,85,60,25);

this.txtName.setBounds(110,55,120,20);

this.pwdPwd.setBounds(110,85,120,20);

this.btnSub.setBounds(85,120,60,20);

this.btnSub.addActionListener(new ActionListener()//匿名類實現ActionListener接口

{

public void actionPerformed(ActionEvent e){

btnsub_ActionEvent(e);

}

}

);

this.btnReset.setBounds(155,120,60,20);

this.btnReset.addActionListener(new ActionListener()//匿名類實現ActionListener接口

{

public void actionPerformed(ActionEvent e){

btnreset_ActionEvent(e);

}

}

);

this.pnluser.add(lbluserLogIn);//加載標簽到面板

this.pnluser.add(lbluserName);

this.pnluser.add(lbluserPWD);

this.pnluser.add(txtName);

this.pnluser.add(pwdPwd);

this.pnluser.add(btnSub);

this.pnluser.add(btnReset);

this.add(pnluser);//加載面板到框架

this.setVisible(true);//設置框架可顯

}

public void btnsub_ActionEvent(ActionEvent e){

String name = txtName.getText();

String pwd = String.valueOf(pwdPwd.getPassword());

if(name.equals("")){

JOptionPane.showMessageDialog(null,"賬號不能為空","錯誤",JOptionPane.ERROR_MESSAGE);

return;

}else if (pwd.equals("")){

JOptionPane.showMessageDialog(null,"密碼不能為空","錯誤",JOptionPane.ERROR_MESSAGE);

return;

}else if(true){

this.dispose();

}else{

JOptionPane.showMessageDialog(null,"賬號或密碼錯誤","錯誤",JOptionPane.ERROR_MESSAGE);

return;

}

}

public void btnreset_ActionEvent(ActionEvent e){

txtName.setText("");

pwdPwd.setText("");

}

public static void main(String[] args){

new UserLogIn();

}

}

求JAVA實現用戶登錄界面代碼？

你要先學會截圖哦,你發的看不清楚,重新寫了一個你參考參考!

import java.awt.GridLayout;

import javax.swing.ButtonGroup;

import javax.swing.JButton;

import javax.swing.JComboBox;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JRadioButton;

import javax.swing.JTextField;

public class Day30A extends JFrame {

private static final long serialVersionUID = 1L;

private JLabel labelName,labelId,labelPass,labelMoney,labelSelect,labelCar;

private JComboBoxString jcb;

private JPanel jp1,jp2,jp3,jp4,jp5,jp6,jp7;

private ButtonGroup btg;

private JRadioButton jr1,jr2;

Day30A(){

this.setTitle("注冊賬戶");

this.setLayout(new GridLayout(7,1));

this.setSize(300,280);

this.setLocationRelativeTo(null);

this.setDefaultCloseOperation(EXIT_ON_CLOSE);

init();

this.setVisible(true);

}

private void init() {

String str="卡片類型1,卡片類型2,卡片類型3,卡片類型4,卡片類型5";

jcb=new JComboBox(str.split(","));

labelId=new JLabel("賬號: ");

labelName=new JLabel("姓名: ");

labelPass=new JLabel("密碼: ");

labelMoney=new JLabel("開戶金額:");

labelSelect=new JLabel("存款類型:");

labelCar=new JLabel("卡片類型:");

addFun1();

addFun2();

}

private void addFun2() {

this.add(jp1);

this.add(jp2);

this.add(jp3);

this.add(jp4);

this.add(jp5);

this.add(jp6);

this.add(jp7);

}

private void addFun1() {

jp1=new JPanel();

jp1.add(labelId);

jp1.add(new JTextField(15));

jp2=new JPanel();

jp2.add(labelName);

jp2.add(new JTextField(15));

jp3=new JPanel();

jp3.add(labelPass);

jp3.add(new JTextField(15));

jp4=new JPanel();

jp4.add(labelMoney);

jp4.add(new JTextField(13));

jp5=new JPanel();

jp5.add(labelSelect);

btg=new ButtonGroup();

jr1=new JRadioButton("定期");

jr2=new JRadioButton("活期",true);

btg.add(jr1);

btg.add(jr2);

jp5.add(jr1);

jp5.add(jr2);

jp6=new JPanel();

jp6.add(labelCar);

jp6.add(jcb);

jp7=new JPanel();

jp7.add(new JButton("確定"));

jp7.add(new JButton("取消"));

}

public static void main(String[] args) {

new Day30A();

}

}

登陸界面的java代碼怎么寫？

import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

import java.sql.*;

class LoginFrm extends JFrame implements ActionListener

{

JLabel lbl1=new JLabel("用戶名");

JLabel lbl2=new JLabel("密碼");

JTextField txt=new JTextField(15);

JPasswordField pf=new JPasswordField();

JButton btn1=new JButton("確定");

JButton btn2=new JButton("取消");

public LoginFrm()

{

this.setTitle("登陸");

JPanel jp=(JPanel)this.getContentPane();

jp.setLayout(new GridLayout(3,2,10,10));

jp.add(lbl1);jp.add(txt);

jp.add(lbl2);jp.add(pf);

jp.add(btn1);jp.add(btn2);

btn1.addActionListener(this);

btn2.addActionListener(this);

}

public void actionPerformed(ActionEvent ae)

{

if(ae.getSource()==btn1)

{

try

{

Class.forName("sun.jdbc.odbc.JdbcOdbcDriver")；

Connection con=DriverManager.getConnection("jdbc:odbc:MyDB","","");

Statement cmd=con.createStatement();

ResultSet rs=cmd.executeQuery("select * from loginAndpassword where login='"+txt.getText()+"' and password='"+pf.getText()+"'");

if(rs.next())

{

JOptionPane.showMessageDialog(null,"登陸成功！");

}

else

JOptionPane.showMessageDialog(null,"用戶名或密碼錯誤！");

} catch(Exception ex){}

if(ae.getSource()==btn2)

{

txt.setText("");

pf.setText("");

}

}

}

public static void main(String arg[])

{

JFrame.setDefaultLookAndFeelDecorated(true);

LoginFrm frm=new LoginFrm();

frm.setSize(400,200);

frm.setVisible(true);

}

}

網頁設計，淘寶網的登入界面的源代碼怎么寫？急急急...

哎，這個告訴你，你用谷歌瀏覽器，登陸這個界面。然后右鍵，審查元素，就會看到一大片源碼，找到這個部分的代碼！你要是一點也不會，那你就好好看看html，css，兩天吧，就會寫！